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Apr 13th, 2015

Let B = the number of bicycles

Let S = the number of scooters

rate of bicyle is $15.50 PLUS 12% tax = $17.35

rate of scooter is$160 PLUS 12% tax = $179.20

the ratio of bicycles to scooters is 5 : 2

so, B/S = 5/2  or B = (5/2)S

Now we can set up the equation:

17.35B + 179.20S = 1600

Substitute B = (5/2)S = 2.5S

17.35(2.5S) + 179S = 1600

43.375S + 179S = 1600

222.375S = 1600

S = 1600/222.375 = 7.195 = 7 scooters

B = (2.5)(7) = 17.5 = 17 bicycles

Apr 13th, 2015


thank you

 

May 4th, 2015

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